Tag Archives: Bahamas Natural History

SEA BISCUITS: THEY REALLY DO CONTAIN DOVES – AND MORE!

Recently I posed the question whether sea biscuits, like sand dollars contain ‘doves’. I had one in my hand, it rattled, I took a photograph through its ‘mouth hole’ and the question was answered. Biscuits do indeed contain doves – see HERE for details and comparisons with dollar doves.

However, I spinelessly* failed to break open the biscuit to check out the contents more closely. I theorised that, because of the 5-way symmetry of these creatures, there would be 5 doves (which are in fact segmented mouth parts) in a biscuit exactly as with a dollar, and amiably challenged anyone to disprove it. [* biscuits and dollars are types of sea urchin – see what I did there?]

Melissa Ann Guinness from Hope Town has a far more robust attitude to these things and, taking up the challenge, she heartlessly smashed open a sea biscuit from her collection to investigate further. I said I’d publish a correction if my theory was wrong. This is it – though in one arguable sense the theory holds good. It just didn’t go far enough…

In the above picture you can see (a) 4 quarters of a sea biscuit skeleton (b) 10 demi-doves (rather than 5 whole doves) and (c) a small mummified 5-limbedbrittle star that was presumably in the creature’s digestive system when it died.

SEA BISCUITS: DO THEY REALLY CONTAIN DOVES?

A couple of years ago I wrote a post called ECHINODERMS, DOLLAR DOVES & PETRIFIED BISCUITS. It dealt with the… fact? rumour? old wive’s tale?… that within each sand dollar test (i.e. the white skeleton) are hidden 5 ‘doves’. You can hear them rattling inside if you shake the dollar…

Sand Dollar from Abaco containing 5 miniature white doves…

I investigated the theory with senior granddaughter, and we broke a sand dollar in half. And as you can see, the answer was undoubtedly yes – there were 5 tiny white doves, thus fulfilling the prediction of the famous ‘Sand Dollar’ poem that contains the lines “Now break the centre open And here you will release The five white doves awaiting To spread good will and peace”.

Five white doves (in fact, the separated parts of the creature’s feeding apparatus)

A single dove, a picture of doveliness

I never thought to extend the experiment to sea biscuits, another object prized by beachcombers. All that changed last month when I picked up a sea biscuit and found that it, too, rattled.

A rattling good sea biscuit

So I turned it over to take a closer look at the underside. And there, unmistakably, was the source of the rattle – some kind of internal arrangement inside the feeding hole (let us not pause overlong to consider the purpose of the other hole). But it wasn’t conclusively a dove.

So I shook it around a bit (sorry, doves) and zoomed in. And there was a small white columbine-type contraption remarkably similar to those found in the dollar dove. And no, I did not smash open the sea biscuit (it wasn’t actually mine). And no, I didn’t doubt any longer that sea biscuits also contain doves.

SO WILL THERE BE 5 DOVES, LIKE WITH THE DOLLARS?

I predict there will also be five. Both dollars and biscuits have ‘five-way symmetry’ (look on the topside of a biscuit or dollar to see how); and so the mouth (from which the ‘doves’ derive) will have a single part for each of the five sectors, all linked.

If anyone would like to smash up one of their precious beach finds and test the theory, please feel free. Prove me wrong… and I’ll publish a correction! [Photo please…]

MARK CATESBY, PIONEER NATURALIST: NEW BOOK

Exactly two years ago, I wrote about the publication of a lavish limited edition facsimile of Mark Catesby’s renowned work The Natural History of Carolina, Florida and the Bahama Islands in 4 volumes to mark the 300th anniversary of Catesby’s arrival in the New World. Unsurprisingly, the cost of the set was prodigious (a rather nice car) – but only a fraction of the cost of a vanishingly rare original set (a rather nice house). Reader, I didn’t buy one.

Now theCATESBY MEMORIAL TRUSThas produced an excellent and inexpensive illustrated introduction to Catesby’s great work that will transport you back through the centuries to the earliest days of natural historical research by Europeans abroad. It’s worth remembering that Catesby antedated the more famous John James Audubon (1785-1851) by a whole century.

Catesby’s signature

The new book has over 40 illustrations from Catesby’s The Natural History of Carolina, Florida and the Bahama Islands. These are paired with relevant extracts from the work, and there is additional commentary. Click on Catesby’s Tropicbird below for a sample of the book.

Mark Catesby (1683 – 1749) was a pioneering English naturalist and artist who published his magnum opus based on a number of expeditions he undertook from 1712 onwards. His was the first ever published account of the flora and fauna of North America, and the 2 volumes (with a supplement) included some 220 colour plates of the creatures and plants of land and sea that he had come across. After his travels, Catesby spent some 20 years producing his masterwork and died soon after, perhaps from the sheer effort of it all.

Red-legged Thrush in Gumbo Limbo Tree

AND HIS RELEVANCE TO THE BAHAMAS IS…?

On behalf of the Royal Society Catesby undertook expeditions, first to Carolina and then more widely in America and eventually in the Bahamas. On these trips he drew and painted detailed pictures of birds, fish, turtles, flowers and corals, many of which are familiar in the Bahamas to this day – and a few of which are included here.

Information about the Catesby Commemorative Trust and the book The Curious Mister Catesby can be found HERE. I have the book: it is wonderful, but as an amateur I find it quite a difficult read, and I have to take it in small chunks.

For anyone tempted to look further into the importance of this ground-breaking naturalist, the CCT produced a 50 minute film that is well worth watching if you are interested to know more.

ECHINODERMS, DOLLAR DOVES & PETRIFIED BISCUITS

Echinoderms (Gr. ‘Hedgehog Skin’) comprise a large variety of sea creatures characterised (mostly) by radial symmetry, often five-way. For Abaconians, the most frequently encountered are starfish, sea urchins, sand dollars and sea biscuits. I am going to look at two particular aspects of dollars and biscuits, conscious that my illustrative photos of white objects were stupidly taken against a white background.

DOLLAR DOVES

I’m sure all Bahamians know or are aware of at least one version of the famous ‘Sand Dollar’ poem, in which the various characteristics of the test (the skeleton of the creature) are given religious significance. One verse of the poem may be puzzling: “Now break the centre open And here you will release The five white doves awaiting To spread good will and peace”.

Recently, Senior Granddaughter (10 this week) was looking at some Abaco sand dollars in her unfeasibly huge collection of shells. She picked one up, shook it and it rattled. She said a friend at school had told her that a rattling sand dollar has ‘doves’ inside it, and asked if we could break it open and see. I’ve learnt that it is useless to argue with her – she has the tenacity of a trial lawyer – so we did. This is what we found.

Sand Dollar with a spiky interior like a white cave with stalagmites and stalagtites

Five white doves (in fact, the separated parts of the creature’s feeding apparatus)

Two broken pieces showing where the doves are centrally located

A single dove (best viewed the other way up for full-on doveliness)

The photo below, from Pinterest, shows the ‘mouth’ with its 5 dove-parts intact, an arrangement called ‘Aristotle’s Lantern’.

PETRIFIED BISCUITS

In common parlance ‘petrified’ is an extreme version of ‘terrified’. Literally, it means ‘turned to stone’ (L. Petrus, a rock). It is descriptive of a state of fossilisation, where an animal skeleton or dead wood or plant matter turns over aeons into stone. Undaunted by her Doves discovery, SG (a most inquisitive girl) also discovered a box containing random stones and fossils. She found these two items:

Fossilised sea biscuits

A closer look at the pair of rocks

The undersides of the fossils above – looking like stones but with some tell-tale small holes

A close-up of the pale biscuit

Sea biscuits as everyone knows them, on the beach at Delphi – skeletons but not yet fossils

A ‘modern’ sea biscuit in close-up

FUN FACT

Florida has an unofficial but proposed State Fossil, the ‘Sea Biscuit (Eocene Age)’. I didn’t know it before, but it turns out that around 40 States have State Fossils. Whatever next? State Bacteria?

SO HOW OLD MIGHT A PETRIFIED BISCUIT BE?

The fossil biscuits I have looked at, from Florida to Madagascar, are said to come from three specific historic epochs – from the oldest, Jurassic (145m – 201m years ago), to Eocene (34m – 56m) and Pleistocene (0.01m – 2.6m).

HOW DOES THAT HELP ANYBODY? BE MORE PRECISE

By all means. Here is an excellent Geochart that gives an idea of the time span. A Jurassic sea biscuit would be more than 145m years old. So maybe the next plan should be to take the 2 petrified sea biscuits plus SG to a museum to see if we can get an idea of their age…

All photos ‘in-house’ except the Delphi biscuits, Clare Latimer & the single biscuit Rhonda Pearce; Geochart to be credited asap, mislaid the source…

MARK CATESBY: PIONEERING NATURALIST OF EARLY c18

There’s been (yet) another abrupt side-swerve away from a topic I’d intended to post about, resulting from a newspaper article I read over the weekend. This concerns what was gushingly described as “the ultimate coffee table book”, a facsimile of Mark Catesby’s renowned work, The Natural History of Carolina, Florida and the Bahama Islands.

Catesby (1682 – 1749) was a pioneering English naturalist and artist who published his magnum opus based on a number of expeditions he undertook from 1712 onwards. His was the first ever published account of the flora and fauna of North America, and the 2 volumes (with a supplement) included some 220 colour plates of the creatures and plants of land and sea that he had come across.

Mark Catesby – Angelfish

Mark Catesby – Queen Triggerfish

Catesby’s growing fame as a botanist led to his undertaking expeditions on behalf of the Royal Society to collect plants and seeds in Carolina. He widened his researches both in America and to the West Indies, collecting plants and fauna as he went and sending them back to England. Among other discoveries, he was one of the very first people to observe and record the occurrence of bird migration as a twice-yearly phenomenon.

Red-legged Thrush in Gumbo Limbo Tree

Eventually, in 1726 Catesby also returned to base and set about writing up his findings and painting what he had seen. He learnt how to etch printing plates, and gradually the illustrations became more sophisticated, starting without backgrounds then including plants with the animals and birds. The whole project took him some 20 years; quite soon after completing it, he died.

Flamingo Head & Gorgonian Coral

CATESBY: THE VIDEO INTRO

WHERE IS THE ORIGINAL WORK NOW?

Catesby’s original drawings were bought by King George III for £120 (a very considerable sum in 1768 – my quick attempts to discover how much suggest ± £200,000) and have remained in the Royal Family ever since. This treasure is kept in the Royal Library of Windsor Castle, the property of HM QE2, though it is occasionally exhibited elsewhere. Later facsimiles of the original were produced, of which some 50 survive today.

Mark Catesby – ‘Bahama Titmous’ (Bananaquit)

SO WHAT’S ALL THE EXCITEMENT ABOUT NOW?

Addison Publications has printed a very limited edition facsimile of 60 in 4 lavish volumes, printed one at a time, “to mark the 300th anniversary of Catesby’s arrival in the New World”.

The cost per set? A stonking £39,500 ($61,330). Now this may sound a great deal of money for a modern copy of an old book and it undoubtedly is. But here’s the Christie’s Auction catalogue entry for one of the early facsimiles. Mmmmmm.

Mark Catesby – Hawksbill Turtle

“Illuminating natural history is so particularly essential to the perfect understanding of it” (Mark Catesby)

Mark Catesby (Black-faced Grassquit)

Delphi afficionados, especially any who have stayed in Room 1, may recognise 3 of the illustrative images I have chosen – the Spindalis, the Bananaquit and the Grassquit. No, I don’t mean the actual species, I mean that Catesby prints of them are tastefully hung on the walls. I can never decide which of the 3 is my favourite…

STOP PRESSThanks to Woody Bracey for his interesting comment. More information about the Catesby Commemorative Trust and the book The Curious Mister Catesby can be found HERE. A slightly curious promo video was also released.

For anyone tempted to look further into the importance of this ground-breaking naturalist, the CCT produced a 50 minute film that is well worth watching if you can spare the time.

ABACO’S FORGOTTEN LIGHTHOUSE: THE “OLD LIGHTHOUSE”, LITTLE HARBOUR

Little Harbour Abaco, Aerial View (Simon Rodehn)

There’s relatively little that a casual investigator can discover about the ruined lighthouse at Little Harbour, Abaco. This hurricane-damaged wreck is Abaco’s third and largely unknown light, after the icon onELBOW REEFand the desolate but romanticHOLE-IN-THE-WALLthat stands on the southern tip of Abaco, down 15 miles of dodgy track through the National Park. Two specific sources of information begin our tour of the “Old Lighthouse at Little Harbour.

“LITTLE HARBOUR Date unknown (station established 1889). Inactive. Ruins of a 1-story concrete keeper’s quarters, known locally as the “old lighthouse.” A modern steel framework tower carried an active light until it was blown over by Hurricane Sandy in October 2012; Trabas has Darlene Chisholm’s photo of the toppled light. A photo and a very distant view are available, and Bing has a satellite view. In an aerial view of the harbor, the light is on the peninsula at upper right. Located at the entrance to Little Harbour, about 25 km (15 mi) south of Marsh Harbour, Great Abaco Island. Accessible by a short walk to the end of the peninsula sheltering the harbor. Site open, tower closed. Site manager: unknown. ARLHS BAH-021; Admiralty J4576; NGA 11808.”

Often overlooked is (or should we say was) the “Old Lighthouse” as it is called. It was established in 1889 at the entrance to of Little Harbour channel, the southern entrance to Abaco Sound. Once it was a manned light, with the lighthouse keeper and his wife being the only inhabitants of Little Harbour. Of course the keepers are long gone and so is most of the house. The light tower was converted to solar in modern times but was dealt a devastating blow by Hurricane Floyd in 1999. Access is via a path which starts from the shoreline and winds up the hill through seagrapes and bush. Few people venture up here these days. If there is a big ocean swell running, walk down to the cliff top in front of the lighthouse, where you’ll find a blowhole known as the Dragon. Depending on swell height, it could be roaring, snorting and shooting out clouds of spray. Sandy Estabrook

Photos referenced by Rowlett – see extract above

Note the steel frame tower on the right, a structure replacing the old light destroyed by Hurricane Floyd in 1999; and itself toppled by Hurricane Sandy in 2012

A GALLERY OF RECENT IMAGES

Lighthouse ruins, Little Harbour Abaco, Patrick Shyu. The only interior shot I could find. Note the fallen steel tower (2012) (and seen from the outside below)

LOCATION

In the header image, the location of the Light, looking very roughly north, is shown as a grey pimple on the eastern peninsula that forms the Little Harbour bay. There is no other building in this area. Below are some additional aerial maps showing the path to the Light and its relative remoteness. It is not covered in the wonderful book on Bahamas lighthouses by Annie Potts entitled “Last Lights”(2011, Fish House Press). I surmise that this small Light was more of a beacon to pinpoint the location of the entrance to Little Harbour, and perhaps to enable triangulation with the large lights atELBOW REEFandHOLE-IN-THE-WALL.

An unusual aerial view of Little Harbour Lighthouse from the north, showing the path to it. You can see the ‘modern steel framework tower’ referred to in the ROWLETT entry above, replacing the original lighthouse tower destroyed by Hurricane Floyd and later toppled by Hurricane Sandy.

GLIMPSES OF LIFE ALONG A CORAL REEF by F. H. HERRICK

This post is aimed at those with a particular interest in the flora and fauna – especially avifauna – of Abaco and its Cays. It is a naturalist’s account from 1886 of an expedition to Abaco, interspersed with a few line drawings. It’s an easy read if you are interested in Abaco, its history, and the state of natural life on the islands 125 years ago. Those who have come to this site for the photos and / or even the occasional jest are warned to expect neither. However, to tempt waverers I’ll highlight below (by way of a quiz) some intriguing aspects of the 9-page article. I have had to edit it to correct the many ‘literals’ in the open-source material; however the c19 spellings are retained. I’ve also added coloured subject-matter codes as follows:PLACE NAMES; BIRDS; PLANTS; FISH; CREATURES

In 1886, Herrick visited Abaco with a party of naturalists. This trip predated by 3 years the publication of Charles Cory’s groundbreaking ‘Birds of the West Indies‘. There would have been scant readily-available published material about the natural history of the Bahamas, let alone of Abaco itself. Herrick and a friend left the main party and went on their own wider explorations of Abaco with two local guides. Herrick recorded their findings, which were subsequently published in ‘Popular Science Monthly‘ in 1888. In Herrick’s wide-ranging account of the adventure you will find the answers to the following 15 questions. If any one of them whets your appetite to read this historic account, press the link below the quiz!

What fruit might you have found growing in fields on Abaco in 1886?

What was the local name for the perforated rock at Hole-in-the-Wall?

What is an “egg-bird”?

What was causing “the gradual extermination” of flamingos?

What were “shanks” and “strikers”?

To what human use were Wilson’s Terns put?

How many eggs does a tropic-bird lay?

What law prevented the shooting of tropic-birds, and indeed any other bird, by naturalists?

What sort of creature is a “sennet”?

Which was rated the better for eating – grouper or ‘barracouta’ (sic)?